What Is the Average of 10, 20, and 30?
The average of 10, 20, and 30 is 20.
How to use this tool
- Enter up to five numbers.
- Set 'how many numbers' to match how many you filled in.
- Read the sum and average.
Find the mean of three numbers quickly with this calculator.
Frequently asked questions
- How do I calculate the average of numbers?
- Add all the numbers together to get the sum, then divide by the count of numbers. For 10, 20, 30, 40, 50: sum=150, average=150/5=30.
- What is the difference between mean, median, and mode?
- The mean (average) is the sum divided by count. The median is the middle value when sorted. The mode is the most frequent value. The mean is most commonly used in everyday calculations.